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Finding the Fourth Proportional to 45,119.84, 67,679.76 and 13,954.40

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Solution

The fourth proportional to 45,119.84, 67,679.76 and 13,954.40 is: 20,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,119.84 : 67,679.76 = 13,954.40 : x
  2. Step 2: Convert to fraction form
    45,119.84/67,679.76 = 13,954.40/x
  3. Step 3: Cross multiply
    45,119.84x = 67,679.76 × 13,954.40
  4. Step 4: Simplify right side
    45,119.84x = 944,430,442.94
  5. Step 5: Solve for x
    x = 944,430,442.94/45,119.84
  6. Step 6: Final answer
    x = 20,931.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.